InChI=1/C16H16N2O4/c1-10(16(20)18-15-12(19)3-2-6-17-15)11-4-5-13-14(9-11)22-8-7-21-13/h2-6,9-10,19H,7-8H2,1H3,(H,17,18,20)/t10-/m0/s1/f/h19h,17-18H 667821AAC001FF5B